FML may refer to:

Computing Face Modeling Language, an XML-based language that describes face animation "Fuck my life", an expression of one's frustration, often used in SMS language FMyLife, a blog Football Manager Live, a video game Fuzzy markup language, in computer science, language for implementation-independent specification of a fuzzy system Forge Mod Loader, the Mod Loader used by Forge, for Minecraft.

Materials Fiber metal laminate, a material composed of metal layers and composite materials A brand name for the medication fluorometholone, a corticosteroid

Music FML (EP), by Seventeen, 2023 "FML" (song), by Kanye West, 2016 "FML" (Arizona Zervas song), 2018 "FML", an instrumental by Deadmau5 from For Lack of a Better Name, 2009

Organisations Fan Milk, a Ghanaian ice cream manufacturer Feed My Lambs, an American educational charity Fiji Muslim League, a religious organization based in Fiji Flint Metro League, a high school sports league in the Flint, Michigan area Friedrich Miescher Laboratory of the Max Planck Society, a research institute in Tübingen, Germany

Other Feldmarschall-Leutnant (Lieutenant field marshal), a rank in the Austrian and later Austro-Hungarian Army FML, station code for Frimley railway station in England